Arabella's visits to Prudencia and Safiro helped a lot of people, but they also triggered quite dangerous enemies.
[It seems there are more people out there who are targeting my wife. We need to find them before they get to do anything more.] Ferdinand held her hand and gently pressed it, assuring her that he would do his best to protect her from all of it.
Ferdinand decided that Lindon would be used as bait for his accomplices. They would only imprison him in the meantime to lure out his master, or at least some of his allies, which in turn, they could use for more information gathering.
This was so they could crush the source itself instead of just the underlings who were simply following instructions and were replaceable.
Ferdinand's goal was to completely eliminate the threat instead of letting them gain more power over time.
"Well done, Alwin. Take some rest for now. We will discuss this more later," Ferdinand copied Arabella and sent Alwin for a break.
